--- a/emul-linux-x86-soundlibs-20110928.ebuild	2011-10-16 15:31:03.000000000 +0300
+++ b/emul-linux-x86-soundlibs-20110928.ebuild	2012-01-16 14:19:26.049775500 +0200
@@ -8,7 +8,7 @@
 
 LICENSE="as-is BSD FDL-1.2 GPL-2 LGPL-2 LGPL-2.1 gsm public-domain"
 KEYWORDS="-* amd64"
-IUSE="alsa pulseaudio"
+IUSE="alsa jack pulseaudio"
 
 RDEPEND="pulseaudio? ( media-sound/pulseaudio )
 	~app-emulation/emul-linux-x86-baselibs-${PV}
@@ -31,4 +31,9 @@
 	if ! use pulseaudio; then
 		rm -rf $(find "${S}" -name '*pulse*' -not -name '*impulse*') || die
 	fi
+
+	if ! use jack; then
+		rm -rf "${S}"/usr/lib32/jack || die
+		rm -f $(find "${S}" -name 'libjack*') || die
+	fi
 }